Manufacturing of Removable Full Dentures Using a Light-Curing Base Material

Methods: Fifty-two patients received new RFDs. Twenty-eight dentures were located only in the maxilla, two only in the mandible and twenty-two in both jaws. After randomization, 38 RFDs were made of Versyo.com (study group) and 36 RFDs of PalaXpress® (control group, PMMA-based denture material, Heraeus Kulzer, Germany). The Versyo.com dentures were manufactured following preliminary instructions. PalaXpress® dentures were fabricated with an injection technique (Palajet®). Patients and dentists were blinded regarding the used material. After manufacturing both materials were evaluated by dental technicians. Furthermore, documentation included the time needed for fabrication, application problems, bad smell, polishing properties and fitting accuracies. Fitting accuracy was evaluated on the models using a ten-point-scale. Statistical evaluation was performed by non-parametric Mann-Whitney-U-Tests (p=0.05).

Results: Time needed to fabricate RFDs in the maxilla was significantly higher for the study group (p=0.016). For the mandible there were no significant differences. Practical application problems were significantly higher for the study group (p<0.001). Inconveniences concerning bad smell was not significant between both groups. Versyo.com does not inherently smell bad, but the Versyo-bonding agent which was used to connect the denture teeth to the denture base. Polishing properties are significantly lower for the study group (p<0.001). Fitting accuracies were significantly better for the control group (maxilla: p=0.001, mandible: p=0.014).

Conclusion: The fabrication of full dentures using PalaXpress®/Palajet®-system is still less time-consuming and more accurate compared to the new light-curing denture material Versyo.com. Versyo.com could be an alternative for patients with allergies to PMMA.

This study was supported by Heraeus Kulzer.